SARA / Free Tools / CVE / CVE-2021-36741

CVE-2021-36741 — Trend Micro Multiple Products Improper Input Validation Vulnerability

An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1 allows a remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability

CVSS
EPSS
90.00% (top 24.60%)
CWE
Published
2021-07-29T19:23:13.000Z
Last modified
2025-10-21T23:25:39.752Z
CVSS vector
CISA KEV — Actively Exploited
Added to KEV
2021-11-03
BOD 22-01 due
2021-11-17
Ransomware use
Unknown

01What is this vulnerability?

An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1 allows a remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability to logon to the product�s management console in order to exploit this vulnerability.

02Affected products

VendorProductVersions
Trend MicroTrend Micro Apex One2019, SaaS
Trend MicroTrend Micro OfficeScanXG SP1
Trend MicroTrend Micro WorryFree Business Security — 10.0 SP1

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2021-11-03. Ransomware use: Unknown.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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